With its lightweight materials and reversible, double-duty design, the Eco-Arete 18 is one of the most versatile packs we make. This bag gives you room for snacks, layers, essentials, and 1.5 liters of water. Its lightweight materials and packable design also make it an excellent travel bag that wont add bulk to your luggage. We updated this version of the Arete with additional pockets to keep your gear organized, along with a removable sternum strap. This bag is made with waterless dyed lining, recycled poly airmesh harness, recycled poly pocket mesh. The reservoir is not included. Use the code on the hangtag to get 20% off the reservoir. Through a partnership with 1% For The Planet, one percent of sales of EcoSmart products will be donated to nonprofits dedicated to protecting the planet.